Why is it recommended to make the class that extends Room Database to abstract?

Issue

What is the reason behind it ? Is it for performance or compulsion? Please Explain

Solution

Because RoomDatabase has defined methods, the inheriting class cannot be an interface. And because you write your undefined method in that abstract class, it cannot be a class.

public interface MyDatabase extends RoomDatabase // extend is not allowed for interface

public class MyDatabase extends RoomDatabase {

     public abstract MyDao myDao(); // abstract method is not allowed for non abstract class

}

Answered By - Israel dela Cruz